rule win_scarabey_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-05-04"
        version = "1"
        description = "Detects win.scarabey."
        info = "autogenerated rule brought to you by yara-signator"
        tool = "yara-signator v0.6.0"
        signator_config = "callsandjumps;datarefs;binvalue"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.scarabey"
        malpedia_rule_date = "20260422"
        malpedia_hash = "a182e35da64e6d71cb55f125c4d4225196523f14"
        malpedia_version = "20260504"
        malpedia_license = "CC BY-SA 4.0"
        malpedia_sharing = "TLP:WHITE"

    /* DISCLAIMER
     * The strings used in this rule have been automatically selected from the
     * disassembly of memory dumps and unpacked files, using YARA-Signator.
     * The code and documentation is published here:
     * https://github.com/fxb-cocacoding/yara-signator
     * As Malpedia is used as data source, please note that for a given
     * number of families, only single samples are documented.
     * This likely impacts the degree of generalization these rules will offer.
     * Take the described generation method also into consideration when you
     * apply the rules in your use cases and assign them confidence levels.
     */


    strings:
        $sequence_0 = { c786900d000054865300 8986940d0000 8986a00d0000 89869c0d0000 8986980d0000 }
            // n = 5, score = 100
            //   c786900d000054865300     | mov    dword ptr [esi + 0xd90], 0x538654
            //   8986940d0000         | mov                 dword ptr [esi + 0xd94], eax
            //   8986a00d0000         | mov                 dword ptr [esi + 0xda0], eax
            //   89869c0d0000         | mov                 dword ptr [esi + 0xd9c], eax
            //   8986980d0000         | mov                 dword ptr [esi + 0xd98], eax

        $sequence_1 = { e8???????? 8d4de4 c745e4fc2f5300 e8???????? b805400080 e9???????? 8b8354ffffff }
            // n = 7, score = 100
            //   e8????????           |                     
            //   8d4de4               | lea                 ecx, [ebp - 0x1c]
            //   c745e4fc2f5300       | mov                 dword ptr [ebp - 0x1c], 0x532ffc
            //   e8????????           |                     
            //   b805400080           | mov                 eax, 0x80004005
            //   e9????????           |                     
            //   8b8354ffffff         | mov                 eax, dword ptr [ebx - 0xac]

        $sequence_2 = { 50 83c2f8 52 56 51 ff15???????? }
            // n = 6, score = 100
            //   50                   | push                eax
            //   83c2f8               | add                 edx, -8
            //   52                   | push                edx
            //   56                   | push                esi
            //   51                   | push                ecx
            //   ff15????????         |                     

        $sequence_3 = { 2bfa 0fb715???????? 2bfa 01bdf0d6ffff 0fb6f8 2bbd14d7ffff 2bfb }
            // n = 7, score = 100
            //   2bfa                 | sub                 edi, edx
            //   0fb715????????       |                     
            //   2bfa                 | sub                 edi, edx
            //   01bdf0d6ffff         | add                 dword ptr [ebp - 0x2910], edi
            //   0fb6f8               | movzx               edi, al
            //   2bbd14d7ffff         | sub                 edi, dword ptr [ebp - 0x28ec]
            //   2bfb                 | sub                 edi, ebx

        $sequence_4 = { 8b0485c0375800 8bfa 83e71f c1e706 8b0407 }
            // n = 5, score = 100
            //   8b0485c0375800       | mov                 eax, dword ptr [eax*4 + 0x5837c0]
            //   8bfa                 | mov                 edi, edx
            //   83e71f               | and                 edi, 0x1f
            //   c1e706               | shl                 edi, 6
            //   8b0407               | mov                 eax, dword ptr [edi + eax]

        $sequence_5 = { 8d42fe 83f814 776c ff248510da4100 8b4114 eb67 8b4118 }
            // n = 7, score = 100
            //   8d42fe               | lea                 eax, [edx - 2]
            //   83f814               | cmp                 eax, 0x14
            //   776c                 | ja                  0x6e
            //   ff248510da4100       | jmp                 dword ptr [eax*4 + 0x41da10]
            //   8b4114               | mov                 eax, dword ptr [ecx + 0x14]
            //   eb67                 | jmp                 0x69
            //   8b4118               | mov                 eax, dword ptr [ecx + 0x18]

        $sequence_6 = { c705????????68405100 c705????????1c405100 c705????????55405100 c705????????be3f5100 a3???????? c705????????ea485100 c705????????da3f5100 }
            // n = 7, score = 100
            //   c705????????68405100     |     
            //   c705????????1c405100     |     
            //   c705????????55405100     |     
            //   c705????????be3f5100     |     
            //   a3????????           |                     
            //   c705????????ea485100     |     
            //   c705????????da3f5100     |     

        $sequence_7 = { e8???????? ff75d0 8bcb e8???????? 8d4dc8 c645fc00 c745c868025300 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   ff75d0               | push                dword ptr [ebp - 0x30]
            //   8bcb                 | mov                 ecx, ebx
            //   e8????????           |                     
            //   8d4dc8               | lea                 ecx, [ebp - 0x38]
            //   c645fc00             | mov                 byte ptr [ebp - 4], 0
            //   c745c868025300       | mov                 dword ptr [ebp - 0x38], 0x530268

        $sequence_8 = { 8bce e8???????? 834dfcff 8d8d3cffffff c7853cffffff74865300 e8???????? }
            // n = 6, score = 100
            //   8bce                 | mov                 ecx, esi
            //   e8????????           |                     
            //   834dfcff             | or                  dword ptr [ebp - 4], 0xffffffff
            //   8d8d3cffffff         | lea                 ecx, [ebp - 0xc4]
            //   c7853cffffff74865300     | mov    dword ptr [ebp - 0xc4], 0x538674
            //   e8????????           |                     

        $sequence_9 = { 8d8df8fcffff c785f8fcffff90825300 e8???????? 83bd2cfdffff00 }
            // n = 4, score = 100
            //   8d8df8fcffff         | lea                 ecx, [ebp - 0x308]
            //   c785f8fcffff90825300     | mov    dword ptr [ebp - 0x308], 0x538290
            //   e8????????           |                     
            //   83bd2cfdffff00       | cmp                 dword ptr [ebp - 0x2d4], 0

    condition:
        7 of them and filesize < 3580928
}